Multilayer, temperature resistant, composite label
Assignee3M Innovative Properties Company
InventorsKyung H. Moh, Daniel Lacave, Bernardus M. Sueoss
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Abstract
A composite material suitable for labeling a substrate. The composite material, which is preferably a ceramic composite, comprises a fired ceramic body and a layer thereon. The fired ceramic body includes a base layer that comprising a glassy phase and a refractory phase, the glassy phase being capable of wetting a substrate at an application temperature. There is sufficient color contrast between the top layer and the fired ceramic body such that a code pattern (e.g., a bar code) present (or formed) is optically discernible. Methods of making and using the same are also taught.
Claims20
A composite ceramic suitable for labeling a substrate, comprising:
- (a) a fired ceramic body comprising a base layer, said base layer including:
- (i) a first glassy phase;
- (ii) a first refractory phase interspersed with said first glassy phase, said first glassy phase being capable of wetting a substrate at an application temperature;
- and
- (b) a top layer provided on said fired ceramic body, said top layer comprising a second glassy phase and a second refractory phase interdispersed within said second glassy phase wherein there is sufficient color contrast between said top layer and said fired ceramic body such that a code pattern is optically discernible, and wherein said composite ceramic includes said code pattern.
Dependencies are inferred from the claim text.